I probably can get you started if you would please give me a little more info.
FIRST - Which township did you find them in? Mequon, Germantown, Polk? I need this to get started, I can go no further until I know where to start.
I *think* I have found info on Johann HEUER and his wife. I will need to visit the local archive office so it may take several weeks to get back to you with whatever info I dig up.